EP1584902A1 - Magnetisch-induktives Durchflussmessgerät und Verfahren zum Betreiben eines magnetisch-induktiven Durchflussmessgeräts - Google Patents
Magnetisch-induktives Durchflussmessgerät und Verfahren zum Betreiben eines magnetisch-induktiven Durchflussmessgeräts Download PDFInfo
- Publication number
- EP1584902A1 EP1584902A1 EP05003169A EP05003169A EP1584902A1 EP 1584902 A1 EP1584902 A1 EP 1584902A1 EP 05003169 A EP05003169 A EP 05003169A EP 05003169 A EP05003169 A EP 05003169A EP 1584902 A1 EP1584902 A1 EP 1584902A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- voltage
- amplifier
- magnetic
- test voltage
- supplied
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/56—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects
- G01F1/58—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using electric or magnetic effects by electromagnetic flowmeters
- G01F1/60—Circuits therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/10—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of flowmeters
Definitions
- the invention relates to a magnetic-inductive flowmeter, for Measurement of the volume flow rate of a medium flowing through a measuring tube, with a magnet for generating a through the measuring tube Magnetic field with a perpendicular to the flow direction magnetic field component, a first electrode and a second electrode for tapping a voltage induced in the medium and an amplifier, to which the voltage picked up by means of the electrodes is supplied.
- the invention further relates to a method for operating a magneto-inductive Flowmeter, for measuring the volume flow of a through a measuring tube flowing medium, wherein the magnetic-inductive Flowmeter a magnet, a first electrode, a second electrode and an amplifier, with the magnet a the measuring tube passing magnetic field with a perpendicular to the flow direction Magnetic field component is generated, with the first electrode and the second electrode is tapped in the medium induced voltage and supplied to the amplifier tapped by the electrodes voltage becomes.
- Magnetic-inductive flowmeters and methods for operating magnetic-inductive Norwegianflußineßello of the type mentioned are have been well known for a long time and are available in a variety of different ways Fields of application used
- the basic principle of a magnetic-inductive Flowmeter for measuring the volume flow of a through a measuring tube flowing medium goes back to Faraday, who in 1832 proposed the principle of electrodynamic induction to use for flow velocity measurement.
- the electrodes are in the known magnetic-inductive flowmeters either designed so that they are galvanic with the flowing Medium are coupled, or such that they are capacitive with the flowing Medium are coupled.
- a special feature of the magnetic-inductive vonßmel3 mar3 mar3 mar is further that the measuring voltage proportional is to the averaged over the cross section of the measuring tube flow velocity of the medium. This means that between measuring voltage and volume flow Proportionality exists.
- the actual für manffußmeßbetnieb is in a magneto-inductive Flow meter generally alternately temporally switching the magnetic field. From the prior art, these are different approaches known.
- a magnetic-inductive Duichflußflop is z. B with an alternating field possible, with typically a supply of the magnetic coils of the magnet directly from the mains with a sinusoidal 50 Hz alternating voltage he follows. The voltage generated due to the flow between the measuring electrodes, however, is easily transformed by transforming Interference voltages and mains interference voltages disturbed.
- the proportional to the flow voltage between the measuring electrodes generally very small, generally in the microvolt range. This voltage is at the highest possible resolution (about 100 mV) measured, the measuring frequency in typical magnetic-inductive Flowmeters that operate on the principle of the switched DC field, in the range of 1 to 100 Hz.
- the tapped at the electrodes voltage is in the known magnetic-inductive Flowmeters in general an amplifier fed before the amplified, proportional to the flow voltage signal is further processed. Amplifiers for this are often differential amplifiers used. An evaluation of the amplified voltage signal takes place still typically in a microprocessor, so it's before feeding the voltage signal to the microprocessor of an analog-to-digital conversion requires an analog-to-digital converter.
- the previously derived and indicated object is achieved by in that a test voltage device and a comparison device are provided are generated by the test voltage device, a test voltage the test voltage device is connected to the amplifier in such a way that that the test voltage supplied to the amplifier and thereby the means of Electrode tapped voltage can be superimposed, the comparison device connected to the amplifier, so that of the amplifier output voltage of the comparator are supplied can, and the comparison device is designed such that a comparison the voltage output by the amplifier is at a reference value can.
- An essential idea of the invention is thus the amplification path and thus in particular the amplifier towards its calibrated operation by applying a test voltage to the amplifier, to which a test voltage is applied Output voltage to be output from the amplifier when operating correctly is known, so that by comparison of the output from the amplifier Voltage with a reference value can be concluded on whether a correct operation of the magnetic inductive flowmeter and in particular
- the reference value is typical during calibration of the magnetic inductive flowmeter in the factory has been determined so that a deviation of the output from the amplifier Voltage upon application of the test voltage from the reference value an indication of a faulty, especially no longer calibrated Operation of the magnetic inductive flowmeter represents.
- a Wameinumbletung provided, from which a warning signal is issued, if the of the Amplifier output voltage from the reference value by more than one deviates from the predetermined amount. This may be for the user of the magneto-inductive Flow meter be an indication that a recalibration of the device is required.
- an evaluation or / and further processing the flow proportional voltage signal in one Microprocessor be provided.
- the amplifier Analog / digital converter is connected downstream. It is still preferable provided that for the test voltage device on the one hand and the analog / digital converter and / or the amplifier, on the other hand, are different from each other and independent voltage sources are provided. Characterized in that the voltage source for supplying the test voltage device from the voltage source for the analog / digital converter or the amplifier is different, such changes in the operation of the Magnetic-inductive flowmeter are detected by a Voltage source of the analog / digital converter or the amplifier originate and recalibrate the device.
- Magnetic-inductive flowmeter according to the invention provided that a warning signal is output when the output from the amplifier Voltage from the reference value more than a predetermined one Amount deviates.
- the Test voltage to the amplifier temporarily, preferably periodically fed
- the test voltage of the tapped by the electrodes voltage only temporarily superimposed, so that on the one hand of the amplifier Voltage signal is output, which consists only of the amplified measurement signal, and on the other hand, such a signal is output which is the amplified measurement signal and the superimposed amplified test voltage composed.
- the voltage output from the amplifier is detected when no test voltage is applied to the amplifier as a second voltage value the voltage output from the amplifier is detected when the test voltage is supplied to the amplifier from the second voltage value a predetermined amount of voltage is subtracted and that with it obtained voltage value is used as a reference value, with which the first Voltage value is compared.
- the predetermined amount of voltage, that of the second voltage value is subtracted, just equal to the amount corresponding to the amplified test signal is expected.
- the voltage output by the amplifier before comparing with the Reference value is digitized by means of an analog / digital converter.
- the test voltage regardless of the supply voltage for the analog / digital converter and / or the supply voltage for the amplifier is generated, to those also specified above To achieve advantages.
- Fig. 1 shows schematically a magnetic-inductive flowmeter for Measurement of the volume flow of a flowing through a measuring tube 1 Medium.
- a non-illustrated magnet is provided for generating a measuring tube 1 passing through the magnetic field with a perpendicular to the flow direction magnetic field component .
- the due to the Magnetic field induced voltage in the flowing medium is by means of a first electrode 2 and a second electrode 3 tapped.
- the means The electrodes 2, 3 tapped voltage is then an amplifier. 4 fed.
- the amplifier 4 is an analog / digital converter 5 downstream, which in turn on a trained as a microprocessor comparator 6 leads, which also serves to evaluate the measurement signal.
- the magnetischinduküve Flowmeter according to the preferred Ausfuhfungsbeispiel
- the invention operates with a switched dc field. That means that the Magnetic coils of the magnet a current with temporally substantially rectangular Gradient is fed, which changes its polarity alternately in time.
- test voltage 7 is provided.
- the Test voltage device 7 is under the control of as a microprocessor formed comparator 6 generates a test voltage corresponding to the Amplifier 4 is supplied.
- the generation and delivery of the test voltage occurs periodically interrupted, so that periodically from the amplifier 4 on the one hand a signal is output that purely the amplified measurement signal, ie the tapped by means of the electrodes 2, 3 voltage corresponds, and on the other hand a signal in which the test signal is superimposed on the test voltage After digitization with the aid of the analog / digital converter, these become Signals in the comparison device 6 further treated.
- the comparator 6 subtracts from the signal resulting from the Measuring signal and the amplified test voltage, a predetermined Amount that corresponds to the expected amplified test voltage, so that a comparison of these obtained by subtraction Voltage with the pure amplified signal to a correct operation the magnetic-inductive flowmeter according to the preferred embodiment the invention can be closed.
- a predetermined Amount that corresponds to the expected amplified test voltage
- the test voltage is always the amplifier 4 for each one fed to half period or few periods of the magnetic field. It lies the test voltage in the order of the tapped by the electrodes 2, 3 Voltage, that is in the microvolts range. Basically, two of the amplifier 4 output voltage values with or without superimposed Test voltage directly compared. However, it is preferable provided that the respective detected signals in the comparison device. 6 are averaged and a comparison of the averaged values takes place.
- Fig. 1 it can be seen that for the test voltage device 7 on the one hand and the amplifier 4 and the analog / digital converter 5, on the other hand, from each other different and independent voltage sources 9, 10th are provided. In this way can reliably such deviations be detected by a calibrated operation on the power supply of the amplifier and / or the analog / digital converter 5 due are.
- Fig. 2 is now a detail of a possible embodiment of the in Fig. 1st shown only schematically illustrated amplifier 4. From the one shown there Arrangement can be seen that when activated test voltage device 7, ie the generation of a test voltage, this the amplifier 4 so is fed that the test voltage tapped by the electrodes 2, 3 Voltage is superimposed. In the deactivated state of the test voltage device 7, however, only the measurement signal, so pure between amplified and output the tapped voltage signal electrodes 2, 3.
- the voltage source 9 of the strigencieseinnchtung 7 exclusively serves the supply of the test voltage device 7 and is in particular regardless of other voltage sources, the means of the amplification path supply.
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Measuring Volume Flow (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
Description
- Fig. 1
- schematisch ein magnetiech-induktives Durchflußmeßgerät gemäß einem bevorzugten Ausführungsbeispiel der Erfindung und
- Fig. 2
- die Verstärkungsschaltung des magnetisch-induktiven Durchflußmeßgeräts gemäß dem bevorzugten Ausfubrungsbeispiel der Erfindung im Detail.
Claims (11)
- Magnetisch-induktives Durchflußmeßgerät, zur Messung des Volumendurchflusses eines durch ein Meßrohr (1) strömenden Mediums, mit einem Magneten zur Erzeugung eines das Meßrohr (1) durchsetzenden Magnetfelds mit einer senkrecht zur Strömungsrichtung verlaufenden Magnetfeldkomponente, einer ersten Elektrode (2) und einer zweiten Elektrode (3) zum Abgreifen einer in dem Medium induzierten Spannung und einem Verstärker (4), dem die mittels der Elektroden (2, 3) abgegriffene Spannung zugeführt wird, dadurch gekennzeichnet, daß eine Testspannungseinrichtung (7) und eine Vergleichseinrichtung (6) vorgesehen sind, von der Testspannungseinrichtung (7) eine Testspannung erzeugt wird, die Testspannungseinrichtung (7) mit dem Verstärker (4) derart verbunden ist, daß die Testspannung dem Verstärker (4) zugeführt und dabei der mittels der Elektroden (2, 3) abgegriffenen Spannung überlagert werden kann, die Vergleichs einrichtung (6) mit dem Verstärker (4) verbunden ist, so daß die von dem Verstärker (4) ausgegebene Spannung der Vergleichseinrichtung (6) zugeführt werden kann, und die Vergleichseinrichtung (6) derart ausgebildet ist, daß ein Vergleich der von dem Verstärker (4) ausgegebenen Spannung mit einem Referenzwert erfolgen kann.
- Magaetisch-induktives Dwchflußmeßgerät nach Anspruch 1, dadurch gekennzeichnet, daß eine Warneinrichtung (8) vorgesehen ist, von der ein Warnsignal ausgegeben wird, wenn die von dem Verstärker (4) ausgegebene Spannung von dem Referenzwert um mehr als einen vorbestimmten Betrag abweicht
- Magnetisch-induktives Durchflußmeßgerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß dem Verstärker (4) ein Analog/Digital-Wandler (5) nachgeschaltet ist
- Magnetisch-induktives Durchflußmeßgerät nach Anspruch 3, dadurch gekennzeichnet, daß für die Testspannungseinnchtung (7) einerseits und den Analog/Digital-Wandler (5) und/oder den Verstärker (4) andererseits voneinander verschiedene und voneinander unabhängige Spannungsquellen (9, 10) vorgesehen sind.
- Verfahren zum Betreiben eines magnetisch-induktiven Durchflußmeßgeräts, zur Messung des Volumendurchflusses eines durch ein Meßrohr (1) strömenden Mediums, wobei das magnetisch-induktive Durchflußmeßgerät einen Magneten, eine erste Elektrode (2), eine zweite Elektrode (3) und einen Verstärker (4) aufweist, mit dem Magneten ein das Meßrohr (1) durchsetzendes Magnetfeld mit einer senkrecht zur Strömungsrichtung verlaufenden Magnetfeldkomponente erzeugt wird, mit der ersten Elektrode (2) und der zweiten Elektrode (3) eine in dem Medium induzierte Spannung abgegriffen wird und dem Verstärker (4) die mittels der Elektroden (2, 3) abgegriffene Spannung zugeführt wird, dadurch gekennzeichnet daß eine Testspannung erzeugt und dem Verstärker (4) derart zugeführt wird, daß die Testspannung der mittels der Elektroden (2, 3) abgegriffenen Spannung überlagert werden kann, und die von dem Verstärker (4) ausgegebene Spannung erfaßt und mit einem Referenzwert verglichen wird.
- Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß ein Warnsignal ausgegeben wird, wenn die von dem Verstärker (4) ausgegebene Spannung von dem Referenzwert um mehr als einen vorbestimmten Betrag abweicht
- Verfahren nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß die Testspannung während des Meßbetriebs erzeugt und dem Verstärker (4) zugeführt wird, so daß die Testspannung der mittels der Elektroden (2, 3) abgegriffenen Spannung überlagert wird.
- Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß die Testspannung dem Verstärker (4) temporär, vorzugsweise periodisch unterbrochen, zugeführt wird.
- Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß als ein erster Spannungswert die von dem Verstärker (4) ausgegebene Spannung erfaßt wird, wenn dem Verstärker (4) keine Testspannung zugeführt wird, als ein zweiter Spannungswert die von dem Verstärker (4) ausgegebene Spannung erfaßt wird, wenn dem Verstärker (4) die Testspannung zugeführt wird, von dem zweiten Spannungswert ein vorbestimmter Spannungsbetrag subtrahiert wird und der damit erhaltene Spannungswert als Referenzwert verwendet wird, mit dem der erste Spannungswert verglichen wird.
- Verfahren nach einem der Ansprüche 5 bis 9, dadurch gekennzeichnet, daß die von dem Verstärker (4) ausgegebene Spannung vor dem Vergleich mit dem Referenzwert mittels eines Analog/Digital-Wandlers (5) digitalisiert wird.
- Verfahren nach Anspruch 10, dadurch gekennzeichnet, daß die Testspannung unabhängig von der Versorgungsspannung für den Analog/Digital-Wandler (5) und/oder der Versorgungsspannung für den Verstärker (4) erzeugt wird.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004018078A DE102004018078B3 (de) | 2004-04-08 | 2004-04-08 | Verfahren zum Betreiben eines magnetisch-induktiven Durchflussmessgeräts |
DE102004018078 | 2004-04-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1584902A1 true EP1584902A1 (de) | 2005-10-12 |
EP1584902B1 EP1584902B1 (de) | 2011-12-07 |
Family
ID=34895578
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05003169A Not-in-force EP1584902B1 (de) | 2004-04-08 | 2005-02-15 | Magnetisch-induktives Durchflussmessgerät und Verfahren zum Betreiben eines magnetisch-induktiven Durchflussmessgeräts |
Country Status (6)
Country | Link |
---|---|
US (1) | US7114400B2 (de) |
EP (1) | EP1584902B1 (de) |
JP (1) | JP4386855B2 (de) |
AT (1) | ATE536533T1 (de) |
DE (1) | DE102004018078B3 (de) |
DK (1) | DK1584902T3 (de) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006050015A1 (en) * | 2004-11-01 | 2006-05-11 | Rosemount Inc. | Magnetic flowmeter with built-in simulator |
WO2008042290A3 (en) * | 2006-09-29 | 2008-07-24 | Rosemount Inc | Magnetic flowmeter with verification |
EP2623940A3 (de) * | 2012-02-03 | 2014-11-05 | Krohne Messtechnik GmbH | Prüfung einer Messgerätanordnung, entsprechende Messgerätanordnung und Prüfanordnung |
EP3121568A1 (de) * | 2015-07-22 | 2017-01-25 | Azbil Corporation | Standardsignalgenerator |
CN109443462A (zh) * | 2018-12-07 | 2019-03-08 | 杭州为峰智能科技有限公司 | 一种防磁计量检测装置 |
CN110114640A (zh) * | 2016-11-22 | 2019-08-09 | 恩德斯+豪斯流量技术股份有限公司 | 用于操作磁感应流量计的方法和磁感应计 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005018179A1 (de) * | 2005-04-19 | 2006-10-26 | Krohne Messtechnik Gmbh & Co. Kg | Verfahren zum Betrieb eines Meßgeräts |
DE102005033290B4 (de) * | 2005-07-16 | 2013-11-28 | Abb Ag | Verfahren und Einrichtung zur Erkennung von physikalisch-chemischen Zuständen an Messelektroden eines Durchflussmessers |
US8590361B1 (en) | 2012-01-27 | 2013-11-26 | Onicon, Inc. | Magnetic flow meters with automatic field maintenance |
DE102012016404B4 (de) * | 2012-08-21 | 2021-08-05 | Krohne Ag | Magnetisch-induktives Durchflussmessgerät mit einer Mehrzahl von Funktionseinheiten |
US10883862B2 (en) * | 2017-10-24 | 2021-01-05 | Mitutoyo Corporation | Measurement-data collecting apparatus and computer program |
EP4191209A1 (de) * | 2021-12-03 | 2023-06-07 | Landis+Gyr GmbH | Verfahren zum anzeigen von informationen |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4010644A (en) * | 1974-03-05 | 1977-03-08 | Ludwig Krohne K.G. | Method for compensation of the electrochemical perturbing direct current potential in inductive flow measurement with a periodically switched uniform field |
DE3303017C1 (de) | 1983-01-29 | 1984-07-26 | Krohne Meßtechnik GmbH & Co KG, 4100 Duisburg | Schaltung zur Selbstüberwachung eines Meßwertumformers für magnetisch-induktive Durchflußmeßgeräte |
EP0416866A1 (de) * | 1989-09-07 | 1991-03-13 | Kabushiki Kaisha Toshiba | Mit Magnetfeldern unterschiedlicher Frequenz arbeitender elektromagnetischer Durchflussmesser |
US5370000A (en) * | 1991-07-04 | 1994-12-06 | Fischer & Porter Company | Magnetic flowmeter with fault detection |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3829063C3 (de) * | 1988-08-26 | 1998-01-29 | Danfoss As | Verfahren zur Drift-Erkennung eines Meßwertumformers bei magnetisch-induktiver Durchflußmessung und magnetisch-induktiver Durchflußmesser |
US5325728A (en) * | 1993-06-22 | 1994-07-05 | Medtronic, Inc. | Electromagnetic flow meter |
-
2004
- 2004-04-08 DE DE102004018078A patent/DE102004018078B3/de not_active Expired - Fee Related
-
2005
- 2005-02-15 DK DK05003169.9T patent/DK1584902T3/da active
- 2005-02-15 EP EP05003169A patent/EP1584902B1/de not_active Not-in-force
- 2005-02-15 AT AT05003169T patent/ATE536533T1/de active
- 2005-04-04 US US11/098,309 patent/US7114400B2/en not_active Expired - Fee Related
- 2005-04-05 JP JP2005108221A patent/JP4386855B2/ja not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4010644A (en) * | 1974-03-05 | 1977-03-08 | Ludwig Krohne K.G. | Method for compensation of the electrochemical perturbing direct current potential in inductive flow measurement with a periodically switched uniform field |
DE3303017C1 (de) | 1983-01-29 | 1984-07-26 | Krohne Meßtechnik GmbH & Co KG, 4100 Duisburg | Schaltung zur Selbstüberwachung eines Meßwertumformers für magnetisch-induktive Durchflußmeßgeräte |
EP0416866A1 (de) * | 1989-09-07 | 1991-03-13 | Kabushiki Kaisha Toshiba | Mit Magnetfeldern unterschiedlicher Frequenz arbeitender elektromagnetischer Durchflussmesser |
US5370000A (en) * | 1991-07-04 | 1994-12-06 | Fischer & Porter Company | Magnetic flowmeter with fault detection |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006050015A1 (en) * | 2004-11-01 | 2006-05-11 | Rosemount Inc. | Magnetic flowmeter with built-in simulator |
US7073393B2 (en) | 2004-11-01 | 2006-07-11 | Rosemount Inc. | Magnetic flowmeter with built-in simulator |
WO2008042290A3 (en) * | 2006-09-29 | 2008-07-24 | Rosemount Inc | Magnetic flowmeter with verification |
US7750642B2 (en) | 2006-09-29 | 2010-07-06 | Rosemount Inc. | Magnetic flowmeter with verification |
EP2623940A3 (de) * | 2012-02-03 | 2014-11-05 | Krohne Messtechnik GmbH | Prüfung einer Messgerätanordnung, entsprechende Messgerätanordnung und Prüfanordnung |
EP3121568A1 (de) * | 2015-07-22 | 2017-01-25 | Azbil Corporation | Standardsignalgenerator |
CN110114640A (zh) * | 2016-11-22 | 2019-08-09 | 恩德斯+豪斯流量技术股份有限公司 | 用于操作磁感应流量计的方法和磁感应计 |
CN109443462A (zh) * | 2018-12-07 | 2019-03-08 | 杭州为峰智能科技有限公司 | 一种防磁计量检测装置 |
CN109443462B (zh) * | 2018-12-07 | 2024-05-10 | 杭州为峰智能科技有限公司 | 一种防磁计量检测装置 |
Also Published As
Publication number | Publication date |
---|---|
ATE536533T1 (de) | 2011-12-15 |
US7114400B2 (en) | 2006-10-03 |
JP2005300534A (ja) | 2005-10-27 |
DK1584902T3 (da) | 2012-03-05 |
JP4386855B2 (ja) | 2009-12-16 |
EP1584902B1 (de) | 2011-12-07 |
US20050223815A1 (en) | 2005-10-13 |
DE102004018078B3 (de) | 2006-01-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1584902A1 (de) | Magnetisch-induktives Durchflussmessgerät und Verfahren zum Betreiben eines magnetisch-induktiven Durchflussmessgeräts | |
EP1217337B1 (de) | Verfahren zur Prüfung des Messbetriebes eines Flüssigkeitmessgerätes | |
WO2006032612A1 (de) | Verfahren zum überprüfen eines magnetisch-induktiven durch flussmessers | |
EP1249687B1 (de) | Magnetisch-induktives Durchflussmessgerät und magnetisch-induktives Durchflussmessverfahren | |
EP1536211B1 (de) | Verfahren zum Betreiben eines magnetisch-induktiven Durchflussmessgeräts | |
WO2015067455A1 (de) | Verfahren zum betrieb einer magnetisch-induktiven messeinrichtung | |
EP3559603B1 (de) | Verfahren zum betreiben eines magnetisch-induktiven durchflussmessgeräts und durchflussmessgerät | |
DE10118002B4 (de) | Magnetisch-induktives Durchflußmeßverfahren und magnetisch-induktives Durchflußmeßgerät | |
WO1998045670A1 (de) | Magnetisch-induktives durchflussmessgerät für strömende medien | |
DE10356008B4 (de) | Verfahren zum Betreiben eines Meßgeräts | |
DE19938160C2 (de) | Magnetisch-induktives Durchflußmeßverfahren und Durchflußmeßgerät | |
EP1541973B1 (de) | Magnetisch-induktives Durchflussmessgerät und Messverfahren für ein magnetisch-induktives Durchflussmessgerät | |
DE10312058A1 (de) | Vorrichtung zum Messen des Volumenstroms eines Messmediums in einem Messrohr | |
EP1431716A1 (de) | Magnetisch induktiver Durchflussmesser | |
EP3559604B1 (de) | Verfahren zum betreiben eines magnetisch-induktiven durchflussmessgeräts und ein solches durchflussmessgerät | |
EP1275940B1 (de) | Verfahren zum Betrieb eines magnetischinduktiven Durchflussmessers | |
DE10356009B4 (de) | Magnetisch-induktives Durchflußmeßgerät und Verfahren zum Betreiben eines magnetisch-induktiven Durchflußmeßgeräts | |
EP1348936B1 (de) | Magnetisch-induktives Durchflussmessverfahren | |
DE10256103B4 (de) | Verfahren zur Bestimmung der Unsicherheit eines mit einer Meßfrequenz arbeitenden Meßverfahrens | |
EP1273891A1 (de) | Verfahren zum Betrieb eines magnetischinduktiven Durchflussmessers | |
EP1273892A1 (de) | Verfahren zum Betrieb eines magnetisch-induktiven Durchflussmessers |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA HR LV MK YU |
|
17P | Request for examination filed |
Effective date: 20060227 |
|
AKX | Designation fees paid |
Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR |
|
17Q | First examination report despatched |
Effective date: 20061218 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: T3 |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502005012211 Country of ref document: DE Effective date: 20120308 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111207 |
|
LTIE | Lt: invalidation of european patent or patent extension |
Effective date: 20111207 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111207 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111207 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120308 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111207 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FD4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111207 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120407 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111207 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111207 Ref country code: IE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111207 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120307 |
|
BERE | Be: lapsed |
Owner name: KROHNE MESSTECHNIK G.M.B.H. & CO. KG Effective date: 20120228 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120409 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111207 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111207 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120229 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20120910 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111207 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120228 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502005012211 Country of ref document: DE Effective date: 20120910 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 536533 Country of ref document: AT Kind code of ref document: T Effective date: 20120215 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20120318 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DK Payment date: 20130218 Year of fee payment: 9 Ref country code: FR Payment date: 20130301 Year of fee payment: 9 Ref country code: GB Payment date: 20130218 Year of fee payment: 9 Ref country code: CH Payment date: 20130220 Year of fee payment: 9 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20130219 Year of fee payment: 9 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111207 Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120215 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20130420 Year of fee payment: 9 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: TR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20111207 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20120215 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20050215 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 502005012211 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: V1 Effective date: 20140901 |
|
REG | Reference to a national code |
Ref country code: DK Ref legal event code: EBP Effective date: 20140228 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20140215 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140901 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140228 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140228 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20141031 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 502005012211 Country of ref document: DE Effective date: 20140902 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140228 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140902 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140215 Ref country code: DK Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20140228 |